/*
 * Copyright 2017 StreamSets Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.streamsets.datacollector.client;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

public class TypeRef<T> {
  private final Type type;

  public TypeRef() {
    this.type = getGenericType(getClass());
  }

  private static Type getGenericType(Class<?> klass) {
    Type superclass = klass.getGenericSuperclass();
    if (superclass instanceof Class) {
      throw new RuntimeException("No type parameter provided");
    }
    ParameterizedType parameterized = (ParameterizedType) superclass;
    return parameterized.getActualTypeArguments()[0];
  }

  public Type getType() {
    return type;
  }
}
